<script setup>

import {Lock, User} from "@element-plus/icons-vue"
import {ref} from "vue";
import {ElMessage} from "element-plus";
import {useRouter} from "vue-router";
import {userLogin} from "@/api/mock";

const isRegister = ref(false);

// 数据模型
const registerData = ref({
  username: '',
  password: '',
  rePassword: ''
});

const checkRePassword = (rule, value, callback) => {
  if (value === '') {
    callback(new Error('请再次确认密码'))
  } else if (value !== registerData.value.password) {
    callback(new Error('两次密码不一样'))
  } else {
    callback()
  }
}
const rules = {
  username: [
    {required: true, message: '请输入用户名', trigger: 'blur'},
    {min: 5, max: 16, message: '长度为5-16位', trigger: 'blur'},
  ],
  password: [
    {required: true, message: '请输入密码', trigger: 'blur'},
    {min: 5, max: 16, message: '长度为5-16位', trigger: 'blur'},
  ],
  rePassword: [
    {required: true, message: '请输入密码', trigger: 'blur'},
    {validator: checkRePassword, trigger: 'blur'},
  ]
}
const router = useRouter()
const form = ref(null)
const register = async () => {
  // const valid = await form.value.validate();
  // if (valid) {}
}


const login =  () => {
  form.value.validate((valid)=>{
    if (valid) {
      userLogin(registerData.value).then(res =>{
        if (res.status) {
          ElMessage.success(res.message ? res.message : '登录成功！');
          router.push("/index");
        } else {
          ElMessage.error( res.message);
        }
      })
    }
  })
}


const clearRegisterData = () => {
  registerData.value = {
    username: '',
    password: '',
    rePassword: ''
  }
}


</script>

<template>
  <el-row class="login-page">
    <el-col :span="12" class="bg"></el-col>
    <el-col :span="6" :offset="3" class="form">
      <!-- 注册表单 -->
      <el-form ref="form" size="large" autocomplete="on" v-if="isRegister" :model="registerData" :rules="rules">
        <el-form-item>
          <h1>注册</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码"
                    v-model="registerData.password"></el-input>
        </el-form-item>
        <el-form-item prop="rePassword">
          <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码"
                    v-model="registerData.rePassword"></el-input>
        </el-form-item>
        <!-- 注册按钮 -->
        <el-form-item>
          <el-button class="button" type="primary" auto-insert-space @click="register">
            注册
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = false;clearRegisterData()">
            ← 返回
          </el-link>
        </el-form-item>
      </el-form>

      <!-- 登录表单 -->
      <el-form ref="form" size="large" autocomplete="off" v-else :model="registerData" :rules="rules">
        <el-form-item>
          <h1>登录</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码"
                    v-model="registerData.password"></el-input>
        </el-form-item>
        <el-form-item class="flex">
          <div class="flex">
            <el-link type="primary" :underline="false">忘记密码？</el-link>
          </div>
        </el-form-item>
        <!-- 登录按钮 -->
        <el-form-item>
          <el-button class="button" type="primary" auto-insert-space @click="login(form)">
            登录
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = true;clearRegisterData()">
            注册 →
          </el-link>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
  height: 100vh;
  background-color: #fff;

  .bg {
    background:  no-repeat 60% center / 240px auto,
    url('@/assets/login-background.jpg') no-repeat center / cover;
    border-radius: 0 10px 10px 0;
  }

  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;

    .title {
      margin: 0 auto;
    }

    .button {
      width: 100%;
    }

    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
</style>
